A.  You have cited many problems which have to be tackled one by one. Apparently, for a layman, these all relate to perineal area but have different etiology and predispositions. Your problems are 1. Suspected chronic prostatitis (burning and vague symptoms in perineal area. 2. Oligospermia (low sperm count, related or unrelated with chronic prostatitis). 3. Psychogenic impotence (performing masturbation well but not having erection in anxiety conditions like with a prostitute). 4. Enlarged testis (suspected hydrocoele). You must visit a urologist for appropriate investigations and treatment.